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South Prairie, WA

Full City Profile · Washington · Pierce County County

3.2 /5.0
B Good
371 Population 976/sq mi density
$112,917 Median Income $42,677 per capita
$391,700 Home Value $439,465 Zillow
51°F Avg Temperature 240 sunny days/yr
141 Violent Crime/100K 3,062 property/100K
B
Overall
3.2 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.8 / 5.0
$112,917 median income, 3.6% unemployment
A+
Affordability
4.7 / 5.0
$391,700 home value, /mo rent
F
Safety
1.0 / 5.0
141 violent crimes/100K
C
Education
2.2 / 5.0
14.9% bachelor's degree or higher
South Prairie experiences four distinct seasons with an average annual temperature of 51°F (11°C). Winters average 41°F in January while summers reach 64°F in July. The area gets 240 sunny days per year. Annual precipitation totals 48.3 inches. The area receives 4.3 inches of snow annually. Air quality is rated Good with a median AQI of 28.

Temperature

41°F Jan (5°C) 64°F Jul (18°C)
Annual Average50.9°F
6% below US avg
January Average41°F (5°C)
July Average64°F (18°C)
Sunny Days240 days/yr

Geography

Elevation424 ft (129 m)
Area0.2 sq mi (0.4 km²)
Population Density976/sq mi
Coordinates47.1354°N, 122.0966°W
TimezoneAmerica/Los_Angeles
CountyPierce County County
Nearest AirportSeattle-Tacoma International (SEA)
24 miles away

Precipitation & Snow

Annual Rainfall 48.3"
27% above US avg
Snowfall 4.3"
Wettest Month (Nov) 8.58"
Driest Month (Jul) 1.57"

Air Quality

AQI Median28.0
RatingGood

Air Pollutants (EPA 2023)

Ozone (O₃)0.0412 ppm
NO₂ (Nitrogen Dioxide)17.9 ppb
PM2.5 (Fine Particles)6.8 μg/m³

Natural Hazard Risk

Overall RiskRelatively High
Risk Score98.5 / 100
Social Vulnerability14.4 / 100
Community Resilience60.1 / 100

Hazard Breakdown

Tornado Relatively Low
Earthquake Relatively High
Wildfire Relatively Low
Flood Relatively High
Hail Very Low
Strong Wind Relatively Low
Heat Wave Relatively High
Winter Weather Relatively Moderate
Lightning Relatively High
Ice Storm Relatively High
Drought Very Low
Cold Wave Relatively High
Landslide Relatively Moderate
Coastal Flood Relatively Moderate
Tsunami Relatively Low
Volcano Relatively High
Avalanche Very High
Source: FEMA National Risk Index v1.20 (Dec 2025)

Earthquake History

1,426 earthquakes (M2.5+) within 150 km since 1990. Strongest: M6.8. Most recent: M2.9 on Aug 21, 2025.

Feb 28, 2001 7 km SSE of Longbranch, Washington M6.8 48 km
Jul 3, 1999 8 km N of Satsop, Washington M5.8 104 km
May 3, 1996 8 km NNE of Lake Marcel-Stillwater, Washington M5.4 72 km
Jun 10, 2001 18 km N of Satsop, Washington M5.0 106 km
Jan 29, 1995 3 km WSW of Des Moines, Washington M5.0 35 km
Jun 23, 1997 2 km NE of Enetai, Washington M4.9 63 km
Apr 25, 2003 26 km W of Brinnon, Washington M4.8 105 km
Jan 30, 2009 6 km ESE of Lofall, Washington M4.7 81 km
Jul 12, 2019 2 km S of Roosevelt, Washington M4.6 82 km
Feb 14, 2011 31 km S of Morton, Washington M4.3 95 km
Jun 18, 1994 11 km SE of Skykomish, Washington M4.3 82 km
Jul 22, 2001 4 km WSW of DuPont, Washington M4.3 45 km
Jun 27, 2013 25 km N of Leavenworth, Washington M4.3 131 km
Feb 18, 2015 15 km ENE of Cle Elum, Washington M4.2 102 km
May 20, 1995 15 km NNE of Ashford, Washington M4.1 31 km
Feb 23, 2017 11 km NE of Hoodsport, Washington M4.1 81 km
Aug 16, 2004 16 km ENE of Packwood, Washington M4.0 70 km
Oct 9, 1998 20 km S of White Swan, Washington M4.0 148 km
Jun 15, 1994 1 km WNW of Hoodsport, Washington M4.0 86 km
Jul 1, 2009 4 km SE of Coupeville, Washington M4.0 125 km
Source: USGS (M2.5+, 1990–2025)

Tornado History

27 tornadoes (EF0+) within 100 km since 1950. Strongest: EF3. Total: 1 injury.

Date Rating Distance Fatalities
Dec 12, 1969 EF3 47 km 0
Dec 18, 2018 EF2 58 km 0
Nov 10, 1965 EF2 78 km 0
Oct 18, 2019 EF1 66 km 0
Jan 18, 2015 EF1 43 km 0
Sep 30, 2013 EF1 21 km 0
Sep 6, 2009 EF1 7 km 0
May 27, 2004 EF1 72 km 0
Jun 27, 2001 EF1 8 km 0
May 31, 1997 EF1 29 km 0
Jun 12, 1978 EF1 21 km 0
Dec 22, 1971 EF1 34 km 0
Oct 26, 1971 EF1 94 km 0
Sep 28, 1962 EF1 43 km 0
Apr 27, 2014 EF0 33 km 0
May 27, 2011 EF0 86 km 0
Oct 25, 2010 EF0 88 km 0
Jun 16, 2006 EF0 86 km 0
Jan 28, 2006 EF0 51 km 0
Oct 15, 2003 EF0 45 km 0
Source: NOAA SPC (EF0+, 1950–2024)

Tsunami History

6 tsunamis recorded within 500 km. Highest wave on record: 250.0 m (820 ft).

Year Location Cause Max Wave Deaths Distance
1980 WASHINGTON Explosion 250.0 m 61 104 km
1894 PUYALLUP RIVER DELTA, TACOMA, WA Meteorological 3.0 m 2 31 km
1891 WASHINGTON Eruption + Earthquake 2.4 m — 143 km
1949 PUGET SOUND, WA Meteorological 2.4 m — 38 km
1949 PUGET SOUND, WA Eruption + Earthquake — 8 40 km
1820 CAMANO ISLAND, WA Meteorological — — 105 km
Source: NOAA/NCEI Historical Tsunami Database. Sorted by wave height.

Nearby Volcanoes

8 volcanoes within 200 km. Closest: Rainier (41 km).

Name Type Elevation Last Eruption Distance
Rainier Stratovolcano 4,392 m (14,409 ft) 1450 41 km
St. Helens Stratovolcano 2,549 m (8,363 ft) 2008 104 km
Adams Stratovolcano 3,742 m (12,277 ft) 950 113 km
Glacier Peak Stratovolcano 3,213 m (10,541 ft) 1700 131 km
Indian Heaven Shield(s) 1,806 m (5,925 ft) -6250 136 km
West Crater Volcanic field 1,329 m (4,360 ft) -5750 140 km
Baker Stratovolcano(es) 3,285 m (10,778 ft) 1880 184 km
Hood Stratovolcano 3,426 m (11,240 ft) 1866 198 km
Source: Smithsonian Institution Global Volcanism Program (GVP). Sorted by distance.

Wildfire History

20 wildfires (100+ acres) within 100 km. Largest: SCHNEIDER SPRINGS (114,743 ac, 2021).

Year Name Acres Distance
2021 SCHNEIDER SPRINGS 114,743 82 km
2017 NORSE PEAK 51,017 55 km
2017 JOLLY MOUNTAIN 38,159 88 km
2022 BOLT CREEK 15,211 87 km
2022 GOAT ROCKS 6,658 69 km
2018 MIRIAM 5,719 82 km
2017 JACK CREEK 5,184 98 km
2009 DISCOVERY 4,240 98 km
2017 AMERICAN 3,794 64 km
2007 BOOMER 3,586 92 km
2018 MAPLE 3,547 94 km
2019 LEFT HAND 3,235 89 km
2001 DOME PEAK 2,756 97 km
2015 MEEKS TABLE 2,387 87 km
2022 LOCH KATRINE 2,163 66 km
1988 FALLS CREEK 2,152 58 km
2012 WILD ROSE 2,134 95 km
2013 MANASTASH RIDGE 1,534 83 km
2011 BIG HUMP 1,400 98 km
2016 ROCK CREEK 1,369 91 km
Source: NIFC/IRWIN (100+ acres)

Monthly Weather

Month Avg Temperature Precipitation Summary
January 41°F (5°C) 7.9 in
February 40°F (5°C) 6.1 in
March 43°F (6°C) 5.5 in
April 46°F (8°C) 4.8 in
May 52°F (11°C) 3.6 in
June 57°F (14°C) 3.0 in
July 64°F (18°C) 1.6 in Warmest, Driest
August 63°F (17°C) 1.8 in
September 58°F (14°C) 3.0 in
October 50°F (10°C) 4.8 in
November 42°F (6°C) 8.6 in Wettest
December 38°F (3°C) 8.0 in Coldest

South Prairie has a seasonal temperature swing of 26°F / from 38°F in December to 64°F in July. Total annual precipitation is 58.6 inches, with November being the wettest month (8.6") and July the driest (1.6").

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